Sand or clay screen.



No. 810,682. PATENTED JAN. 23, 1906.

L. P. SHAPER & 0. DEVIS.

SAND 0R CLAY SCREEN. APPLICATION FILED APILB, 1905.

WITNESSES Cfiar/as Jeni ATTOR E Urrn sr rns PATENT mm.

LEMEON P. SHAFERAND OHARLES DEVIS. OF CANTON. OHIO.

SAND OR CLAY SCREEN.

Patented Jan. 23, 19b6.

Application filed April 3, 1905. Serial No. 253,611.

To all whom it may concern:

Be it known that we, LEMEON P. SHAFER and OHARLEs DEVIS, citizens of the United States, residing at Canton, in the county of Stark and State of Ohio, have jointly in vented certain new and useful Improvements in Sand or Clay Screens; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the figures of reference marked thereon, in which Figure 1 is a perspective view showing the screen properly suspended. Fig. 2 is a longitudinal section taken at a point between the side members of thescreen-frame. Fig. 3 is a View showing a portion of the tensionhead andportions of one of the tension-bars and one of the stay-bars. Fig. 4 is a transverse section showing a portion of one of the side members of the screen-frame, showing a side plate secured thereto. Fig. 5 isa view showing a portion of one of the side members of the screen-frame and illustrating one of the bridge-bar bracketsand adjusting-screw. Fig. 6 is a detached view showing a portionof one of the bridge-bars. w

The present invention has relation to sand or clay screens; and it consists in the novel construction hereinafter described, and particularly pointed out in the claims.

Similar numerals of reference indicate corresponding parts in all the figures of the draw-- ings.

In the accompanying drawings, 1 represents the side members of the screen-frame, which are preferably formed of channel-iron and are held in proper spaced relation to each other by the tie-bars 3 and 4, which tie-bars are located near the ends of the side members 1 and secured thereto in such a manner as to produce a rigid rectangular screen-frame when the parts just above mentioned are se cured together by suitable rivets or otherwise. It will be understood that the side members 1 and the tie-bars 3 and 4 may be formed of such lengths that they will produce a screen-frame of the desired size, reference being had to the particular use to which the screen is to be applied. To the side members 1 are attached the tension-heads 6,which tension-heads are provided with the divided extensions 7, to which extensions the tension bars 8 are attached, substantially as illustrated in Fig. 3. The screen and holdingwhich holding-pins are properly'connected in any convenient and well-known manner to the bar 13 or its equivalent. The bar 13 is held in fixed position upon the tiebar 13 by means of the lug-bolts 15 or their equivalents; but this construction is immaterial so far as detail is concerned, inasmuch as the only object designed to be accomplished is to provide a suitable stay-bar for the sidemem ers of the frame and a suitable screen-wireholding bar. In clay-screens of the class de scribed it is important that each screen-wire 11 is provided with a separate and independ ent tension device, so that all of the wires may be brought to a uniform tension regardless of any variation as to the stretching of the different wires. In order to provide a separate tension for each wire, the wire-hold.- ing bars 9 are provided and a bar is provided for each and every wire and each bar is screwthreaded at their outer ends, which screw-threaded portions extend through the tension-bars 8 and have located thereon nuts 16, by which arrangement the bars 9 can be moved endwise by the rotation'of the nuts. In order to provide room for the bars 9, the tension-bars 8 are spaced from each other, as illustrated in Figs. 1 and 2, and by spacing the tension-bars sufficient room is provided for the screen-wire-holding bars 9 and their nuts 16. For the purpose of supporting the bridge-bars 12 the brackets 17 are provided, which brackets are secured to the side members 1 of the screen-frame, substantially as illustrated in Fig. 5, and for the purpose of bringing the bridge-bars 12 into proper adjustment with reference to the screen-wires 11 the adjusting-screws 18 are provided,

which adjusting-screws are located through screw threaded apertures formed in the brackets 17 and their upper ends brought in contact with the under edges of the bridgebars 12.

For the purpose of suspending the screen proper a frame, such as 19, may be provided and the head end of the screen held by the rods 20 and the delivery end by the bail 21, the chain 22, and the crank-shaft 23. For the purpose of adjusting the angularity of the screen the chain 22 is wound around the shaft 23, and by rotating the shaft in one dibars 9 are provided with the hooked ends 10, rection the delivery end of the screen will be ICC - time the elevated, and by rotating said shaft in the opposite direction the delivery end of the screen will be lowered, and when the screen is brought into proper position the shaft 23 is held against rotation by means of the ratchet 24 and the dog 25.

For the purpose of holding the material upon the screen-wires the side boards 26 are provided, which side boards are held in proper relative position by means of the brackets 27. For the purpose of preventing the screenwire-holding bars 9 from rotating during the nuts 16 are rotated their non-screwthreaded portions are formed angular and the angular portions located through the angular apertures 28, formed in the stay-bars 29, which stay-bars also serve the purpose of holding the bars 9 in proper relative position, said bars being secured to the tension-head 6 or the arms 7 of the tension-head.

We have illustrated the tension-head provided with the divided extensions 7; but this is simply done for the purpose of lightening the device, as the only ob ect is to provide means for spacing the tension-bars 8 from each other.

For the purpose of holding the screen-wires 11 in proper relation with reference to each other the tie-bars and the bridge-bars, over Which the wires are passed, are provided with notches 30 and the wires seated in the notches.

Having fully described our invention, what We claim as new, and desire to secure by Letters Patent, is

1. In a screen of the class described, the combination of a suitable frame, consisting 'of side members and tie-bars, heads carried by the'frame said heads provided with ten= sion-bars and the tension-bars located in different horizontal planes, Wire-holding bars secured to said tension-bars and independently adjustable, a series of screen-wires secured to the inde endently-adjustable holding-bars at one of their ends and their opposite ends secured in fixed position and means for holding the screen-wires in spaced relation with each other, substantially as and for the purpose specified.

2. In a screen of the class described, the combination of a suitable frame, the side members of said frame consisting of channelbars, means for holding the side members in proper spaced relation, a tension-head provided with tension-bars, said tension-bars located in different horizontal lanes, a series of screen-wires held in fixed re ation with reference to the frame at one of its ends, said screen-wires secured to independent adjustable wire-holding bars at their opposite ends, said adjustable wire-holding bars located in series and in different planes, and a bridgebar located intermediate the ends of the screen-wires, and means for adjusting the bridge-bar to and from the screen-wires, substantially as and for the purpose specified.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses.

LEMEON P. SHAFER. CHARLES DEVIS.

Witnesses:

J. A. JEFFERs, F. W. BOND. 

